countdown need push button

Projects Programming
16

As mentioned earlier . . .

  • What does this do?
    while (!digitalWrite, sw)

  • When will this be true?
    if (currentMillis == 1000 && ledState1 == HIGH) {

  • Put each line of code on a line by itself.

  • Place each { and } on a line by them self, makes it easier to find them.

  • A week from now, comments would remind you what’s happening.
    When asking for help, your code should be commented so we can figure out what you are trying to do.